ArthasBootstrap.getInstance(instrumentation, "") 如何禁止调用/api/latest_version

- [ ] 我已经在 [issues](https://github.com/alibaba/arthas/issues) 里搜索，没有重复的issue。

### 环境信息

* `arthas-boot.jar` 或者 `as.sh` 的版本： xxx
* Arthas 版本: 4.0.1
* 操作系统版本: centos
* 目标进程的JVM版本: jdk8
* 执行`arthas-boot`的版本: 4.0.1

初始化调用ArthasBootstrap.getInstance(instrumentation, "") 时，会自动调用[/api/latest_version](https://arthas.aliyun.com/api/latest_version接口，就为了打印一行日志？我看代码里没办法关掉这个调用么

public static String welcome(Map infos) {
logger.info("Current arthas version: {}, recommend latest version: {}", version(), latestVersion());
TableElement table = (new TableElement()).rightCellPadding(1).row(new String[]{"wiki", wiki()}).row(new String[]{"tutorials", tutorials()}).row(new String[]{"version", version()}).row(new String[]{"main_class", PidUtils.mainClass()}).row(new String[]{"pid", PidUtils.currentPid()}).row(new String[]{"time", DateUtils.getCurrentDate()});
Iterator var2 = infos.entrySet().iterator();

while(var2.hasNext()) {
Map.Entry entry = (Map.Entry)var2.next();
table.row(new String[]{(String)entry.getKey(), (String)entry.getValue()});
}

return logo() + "\n" + RenderUtil.render(table);
}

static String latestVersion() {
try {
URLConnection urlConnection = openURLConnection("https://arthas.aliyun.com/api/latest_version");
InputStream inputStream = urlConnection.getInputStream();
return IOUtils.toString(inputStream).trim();
} catch (Throwable var2) {
return "";
}
}

```

Start with ArthasBootstrap.getInstance(instrumentation, "") and the welcome() and latestVersion() methods shown in the issue. Trace how the welcome message is assembled and where the /api/latest_version request is triggered. Done means initialization can disable that request while retaining the remaining welcome information; add or update a focused test if the existing test structure covers this path.

Written by the indexing model from the issue text.